Jackson improved quite a bit in May, but his production still pales in comparison to his strong rookie campaign.

Austin Kearns - .197/.305/.282, 0 HR, 62 wRC+ (82 PA)

He's taking some walks, but he's also striking out a ton and ... not hitting.

Juan Miranda - .250/.366/.481, 5 HR, 125 wRC+ (124 PA)

He's flashing all of the tools that made him an intriguing prospect (albeit an older one). With Posada and Swisher struggling, I wonder if Cashman regrets dealing him (though, Scottie Allen is a fine prospect).

Jose Tabata - .249/.361/.361, 3 HR, 109 wRC+ (203 PA)

Tabata's up and down season continues, though it is worth noting that his walk rate is very strong (14.3%) and his BABIP is around twenty points lower than expected.

I wonder what the Yankees saw that the Red Sox did not, in terms of injuries and/or attitude. On the other hand, I wonder what scared the Red Sox away from Russell Martin. That seems like a fair trade-off though.

Phil Coke - 52.0 IP, 48 H, 16 BB, 30 K, 3.81 ERA, 3.57 FIP

He's been a league-average-ish starter. There's a fair bit of value in that.

Michael Dunn - 23.2 IP, 13 H, 14 BB, 29 K, 3.80 ERA, 3.91 FIP

He struggled in May, but the strikeout rate is still impressive. He's probably more of a lefty specialist than I previously believed.

Ian Kennedy - 79.2 IP, 64 H, 22 BB, 63 K, 3.16 ERA, 3.35 FIP

He's certainly benefited from moving to the NL West, but I still feel that the Yankees gave up on Kennedy way too soon. I always preferred him to Phil Hughes - at least in terms of pitchability.

Sergio Mitre - 23.0 IP, 18 H, 6 BB, 9 K, 1.96 ERA, 3.63 FIP

Strong numbers across the board, but we knew that Mitre was a solid middle relief option - he's yet to start a game in 2011.

Dustin Moseley - 65.0 IP, 64 H, 20 BB, 29 K, 3.18 ERA, 4.02 FIP

He's actually been a bit better on the road than at home, but he's been fairly lucky across the board.

Javier Vazquez - 52.1 IP, 57 H, 27 BB, 30 K, 6.02 ERA, 5.08 FIP

Javy was actually a great deal better in May. His ERA doesn't quite reflect it, but he slashed his walk rate by about seventy-five percent and picked up more grounders ... but he's still not striking anyone out, and his 4.39 xFIP in May is well below average.

Kerry Wood - 20.2 IP, 21 H, 9 BB, 16 K, 2.61 ERA, 4.25 FIP

Wood lost his ability to strike people out in May (5.56 K/9) and his BABIP and LOB% regressed towards the mean (though the latter isn't necessarily stable due to the leveraging of relievers). I still wish he'd been willing to come back to New York.

As always, leave a comment if you'd like to see another player or statistic added.

Jackson improved quite a bit in May, but his production still pales in comparison to his strong rookie campaign.

Austin Kearns - .197/.305/.282, 0 HR, 62 wRC+ (82 PA)

He's taking some walks, but he's also striking out a ton and ... not hitting.

Juan Miranda - .250/.366/.481, 5 HR, 125 wRC+ (124 PA)

He's flashing all of the tools that made him an intriguing prospect (albeit an older one). With Posada and Swisher struggling, I wonder if Cashman regrets dealing him (though, Scottie Allen is a fine prospect).

Jose Tabata - .249/.361/.361, 3 HR, 109 wRC+ (203 PA)

Tabata's up and down season continues, though it is worth noting that his walk rate is very strong (14.3%) and his BABIP is around twenty points lower than expected.

I wonder what the Yankees saw that the Red Sox did not, in terms of injuries and/or attitude. On the other hand, I wonder what scared the Red Sox away from Russell Martin. That seems like a fair trade-off though.

Phil Coke - 52.0 IP, 48 H, 16 BB, 30 K, 3.81 ERA, 3.57 FIP

He's been a league-average-ish starter. There's a fair bit of value in that.

Michael Dunn - 23.2 IP, 13 H, 14 BB, 29 K, 3.80 ERA, 3.91 FIP

He struggled in May, but the strikeout rate is still impressive. He's probably more of a lefty specialist than I previously believed.

Ian Kennedy - 79.2 IP, 64 H, 22 BB, 63 K, 3.16 ERA, 3.35 FIP

He's certainly benefited from moving to the NL West, but I still feel that the Yankees gave up on Kennedy way too soon. I always preferred him to Phil Hughes - at least in terms of pitchability.

Sergio Mitre - 23.0 IP, 18 H, 6 BB, 9 K, 1.96 ERA, 3.63 FIP

Strong numbers across the board, but we knew that Mitre was a solid middle relief option - he's yet to start a game in 2011.

Dustin Moseley - 65.0 IP, 64 H, 20 BB, 29 K, 3.18 ERA, 4.02 FIP

He's actually been a bit better on the road than at home, but he's been fairly lucky across the board.

Javier Vazquez - 52.1 IP, 57 H, 27 BB, 30 K, 6.02 ERA, 5.08 FIP

Javy was actually a great deal better in May. His ERA doesn't quite reflect it, but he slashed his walk rate by about seventy-five percent and picked up more grounders ... but he's still not striking anyone out, and his 4.39 xFIP in May is well below average.

Kerry Wood - 20.2 IP, 21 H, 9 BB, 16 K, 2.61 ERA, 4.25 FIP

Wood lost his ability to strike people out in May (5.56 K/9) and his BABIP and LOB% regressed towards the mean (though the latter isn't necessarily stable due to the leveraging of relievers). I still wish he'd been willing to come back to New York.

As always, leave a comment if you'd like to see another player or statistic added.